Tech Fundamentals for Building with AI
Plain-language basics every beginner runs into: Node.js, the terminal, Git, APIs, .env files, DNS and more. Each page gives you a clear definition, quick setup steps and the common confusions, with links straight into the lessons that use them.
Concepts
JSON, YAML and Markdown Explained
JSON, YAML and Markdown are three plain-text formats you will meet constantly. Learn what each is for and how to read them at a glance.
Concepts · 2 min readWhat Is a .env File?
A .env file stores secrets like API keys outside your code so they never get published. Learn what it is, how it works and how to keep it safe.
Concepts · 2 min readWhat Is an API? A Plain-Language Guide
An API is a way for two programs to talk to each other. Learn what an API is, how it works, and why it matters for building with AI.
Concepts · 2 min readWhat Is a Database?
A database is an organised store for your app data that you can save, search and update. Learn what databases are and the main types in plain language.
Concepts · 2 min readWhat Is DNS? The Internet Phone Book
DNS turns a domain name like yoursite.com into the address of the server that answers for it. Learn how DNS works and how to connect a domain.
Concepts · 2 min readWhat Is OAuth? Login with Google Explained
OAuth lets users log in with an existing account like Google without sharing their password with you. Learn how it works and why it is safer.
Concepts · 2 min readWhat Are Tokens in AI?
Tokens are the chunks of text AI models read and are billed in. Learn what a token is, why it matters for cost, and how it differs from a password token.
Concepts · 2 min readTerminal vs Shell: What Is the Difference?
The terminal is the window; the shell is the program inside it that runs your commands. Learn the difference and why it occasionally matters.
Concepts · 2 min readLocalhost and Dev Servers Explained
Localhost means this computer, and a dev server previews your site locally while you build. Learn what they are and why nothing is public yet.
Concepts · 2 min readRepos and Version Control Explained
A repository is your project folder tracked by Git, and version control is the safety net that records every change. Learn both in plain language.
Concepts · 2 min readWhat Is TypeScript?
TypeScript is JavaScript with type checking that catches mistakes before you run your code. Learn what it is and why so many projects use it.
Concepts · 2 min readWhat Is a Framework?
A framework is a ready-made structure for building apps so you do not start from scratch. Learn what frameworks are and why nearly every app uses one.
Concepts · 2 min readTools and setup
What Is Node.js (and How to Install It)
Node.js is a runtime that lets you run JavaScript outside the browser. Learn what it is, why you need it, and how to install it in a few minutes.
Tools and setup · 2 min readTerminal Basics for Total Beginners
The terminal is a text window where you type commands to control your computer. Learn the handful of commands you actually need to get started.
Tools and setup · 2 min readWhat Is Git? Version Control Explained
Git is a version control tool that saves snapshots of your project so you can always go back. Learn what it is and the few commands you need.
Tools and setup · 2 min readWhat Is GitHub? A Beginner Guide
GitHub is a website that stores your Git projects online so you can back them up, collaborate and deploy. Learn what it is and how to use it.
Tools and setup · 2 min readVS Code Setup for Beginners
VS Code is a free, popular code editor. Learn what it is, how to install it, and the few settings and extensions worth turning on first.
Tools and setup · 2 min readnpm vs Bun: Package Managers Explained
npm and Bun both install the libraries your project depends on. Learn what a package manager does and how npm and Bun differ.
Tools and setup · 2 min read